JP5043399B2 - Packaging equipment - Google Patents

Description

  The present invention relates to a packaging device for packaging a predetermined product such as bread in a bag.

  As an apparatus for packaging bread with a bag, a plurality of bags each having a bag portion and an elongated extension portion provided along one side edge of the opening of the bag portion are stacked and spaced in the width direction of the extension portion. Two pins extending in the laminating direction are inserted into two pin holes provided with a hole to hold the laminated bag, and the opening is expanded in order from the uppermost bag, and the widened In general, a pan is inserted through an opening and pulled out from another bag and carried out.

When the top bag is pulled away from the other bag, air is passed through the opening of the top bag so that the pins around the pin hole of the extension do not break around the pin hole. A device has been developed in which a pin hole provided in the lifted portion is released from the pin by utilizing the fact that both sides in the width direction of the extension portion are lifted by blowing and thereby inflating the bag. (Patent Document 1)
Japanese Patent No. 3631914

  An object of the present invention is to make it possible to more reliably prevent breakage of an extended portion of a bag due to a pin in a packaging device using the same bag as described above.

That is, the present invention
A bag having a bag portion and an elongated extension portion provided along one side edge of the opening of the bag portion, the bag having two pin holes provided at intervals in the width direction of the extension portion; , Support means for supporting the laminated parts so that the bag parts overlap with each other and the extensions overlap each other in the vertical direction;
Two pins that are passed through the stacked pin holes and whose tip protrudes upward from the pin hole of the uppermost bag;
An inner engagement member disposed between the two pin holes and press-engaging with the extension;
An outer member that is disposed outside the two pin holes in the width direction of the extension and is displaceable between a pressing position pressed by the extension and a press releasing position away from the extension. A joint member;
A main air jet nozzle that blows air into the bag portion of the uppermost bag to inflate the bag when the outer engagement member is in the pressing release position, and the inflated bag An opening means including an expansion member that enters the bag portion from the opening of the bag and expands the bag portion;
Product pushing means for pushing the product through the opening into the expanded bag of the uppermost bag;
Bag unloading means for pulling out the uppermost bag into which the product has been pushed from between the inner engagement member and another bag in a state where the outer engagement member is in the pressing position;
When the bag unloading means unloads the uppermost bag, there is provided a packaging device comprising: the two pins, and a pin retracting means whose tip is pulled downward from a pin hole of the uppermost bag.

  In this packaging device, when the uppermost bag containing the product is pulled away from the other bag and carried out, there is no possibility of the pin being caught in the bag hole and being damaged.

In particular,
The expansion members are close to each other and are in a reduced state suitable for insertion into an opening expanded by air from the main air jet nozzle and located on the extension side of the topmost bag. At least two expansion members that are displaceable between a retracted position that is inserted into the bag portion and an advanced position that is separated from each other and is expanded to expand the bag portion, A jet nozzle can be attached to each of the expansion members, and when the expansion member is in the retracted position, the air outlet can be directed toward the opening of the top bag.

  Since the main air jet nozzle is attached to the expansion member that advances into the bag portion through the opening, air supply into the bag portion can be performed extremely efficiently compared to the one disclosed in Patent Document 1 described above. Can do.

Also,
The support member supports the stacked bags such that the uppermost extension is positioned lower than the uppermost bag portion;
The opening means further comprises a sub air jet nozzle disposed at a position proximate to the uppermost extension, the air outlet of which is directed to the opening of the uppermost bag. In the initial stage of expanding the air, the air can be blown from the sub air jet nozzle to the opening to widen the opening, and the main air jet nozzle can blow air into the opening widened by the sub jet nozzle.

  By setting the extended portion of the uppermost bag at a position lower than the bag portion, the uppermost opening can be slightly opened, or the opening can be easily opened. . The secondary air jet nozzle is positioned at approximately the same level as the opening thus formed, and air is blown substantially horizontally toward the opening to open the opening, and air from the main air jet nozzle is supplied to the opening. Since the spraying is performed, the opening can be opened more efficiently.

  The inner engagement member is provided adjacent to the two pin holes, and when the uppermost bag is expanded by the opening means, the pin hole of the uppermost bag is positioned around the pin. Can be held in.

  When the bag is unfolded, both sides of the extension are lifted, but the periphery of the pin hole is maintained when the pin is displaced to the retracted position by holding the pin hole around the pin hole. Do not pull in with the pin.

In particular,
The inner engagement member may have an opening through which the tip of the pin passed through the pin hole of the laminated extension.

Furthermore,
When the outer engagement member is in the pressing position, the engagement pressure with the extension of the uppermost bag of the inner engagement member is reduced, and the inner engagement member and the other bag From above, the uppermost bag can be pulled out with low resistance.

In particular,
The support member is
A first support part for supporting the laminated bag parts;
A second support for supporting the stacked extensions;
Have
The first support portion may be displaced downward by a force applied from the outer engagement member through the stacked extension portion when the outer engagement member is in the pressing position. it can.

  Hereinafter, embodiments of a packaging apparatus according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing an outline of a main configuration of a packaging apparatus 10 for bread packaging according to the present invention, and FIG. 2 is a perspective view of stacked bags P used in the packaging apparatus 10.

  First, the bag P has a bag part P1 and an elongated extension part P2 provided along one side edge of the opening P4 of the bag part, and the extension part is spaced 2 in the width direction. Two pin holes P3 and P3 are provided.

  The packaging device 10 is disposed between the support means 12 for stacking and supporting the bags, the pair of pins 14 and 14 passed through the pin holes P3 of the stacked bags, and the pins 14 and 14, Inner engagement members 16 and 16 that press-engage with the extension P2 at positions adjacent to the pins, and outer engagement that is disposed outside the pins 14 and 14 to engage and disengage from the extension P2. The air is blown into the member 18, 18 and the bag portion P1 of the uppermost bag through the opening P4 to inflate the bag (FIG. 3). The air jet nozzles 64, 66, 64, and the inflated bag Slice through the opening P4 into the opening means 22 including the expansion members 60 and 62 that enter the bag portion P1 through the opening P4 and expand the bag portion (FIG. 8), and the expanded bag portion P1 of the uppermost bag. The pushed bread B (FIG. 9), the pushing means 24, and the bread And a, and carrying-out means 24 for unloading pulled away from the top of the bag to the other stacked bags pushed is.

  The support means 12 supports and stacks the bags P such that the bag portions P1 and the extension portions P2 overlap each other in the vertical direction. As shown in the figure, the support means 12 includes a first support member 30 that supports the stacked bag parts P1 and a second support member 32 that supports the stacked extension parts P2, as shown in the figure. Further, the stacked bags are supported such that the extension portion P2 of the uppermost bag is positioned lower than the uppermost bag portion P1. By doing so, the opening P4 of the uppermost bag is slightly opened (FIG. 2) or the opening is easily opened.

  As shown in FIGS. 3 and 4, the second support member 32 is an elongated member extending in the width direction of the packaging device, and a pair of the second support members 32 attached to the first support member 30 at positions separated in the width direction. Although not shown in detail, the mounting member 34 supported by the mounting member 34 includes a spring member, and biases the second support member 32 upward and is supported on the second support member 32. The extended portion P2 of the stacked bags is pressed and held between the inner engaging members 16 and 16.

  Each of the pins 14 and 14 is set so as to protrude upward from the pin hole P3 of the uppermost bag P, and the uppermost bag is pulled away from the other stacked bags by the carrying-out means 24 and carried out. When being done, it is retracted below the pin hole of the uppermost bag (FIG. 9). Specifically, each of the pins holds a lower end thereof, and spring biasing holding means 50 (FIGS. 8 to 9) which is biased upward so that the upper end of the pin is in the protruding position. The spring biasing holding means 50 is pushed down to have a pushing means 52 for displacing the pin to the retracted position. The push-down means has an air cylinder 54 and a bracket 56 that engages with the spring biasing means 50 and is driven downward by the air cylinder.

  The inner engaging members 16, 16 extend substantially horizontally on the stacked extension portion P2 and engage with the upper portion of the tongue, and extend downward from the rear end of the engaging portion 40, respectively. And a fixing portion 42 fixed to the stationary frame of the packaging device (FIG. 8). The front end portion of the engaging portion 40 protrudes outward in the width direction of the extension portion so as to partially surround the pins 14 and 14 (FIG. 6). As will be described later, the bag portion P1 passes through the opening P2. When air is blown into the bag portion and the bag portion is expanded, the periphery of the pin holes P3 and P3 of the extension portion P2 does not lift and is held around the pins. FIG. 7 shows another embodiment of the engaging portion 40, in which a circular hole 43 is formed so as to surround the entire periphery of the pin rather than partially surrounding the pin as in FIG. Yes.

  As shown in FIG. 8, each of the outer engaging members 18 and 18 is formed in a lever shape pivoted on the stationary frame of the packaging device, and is extended by an unillustrated driving means P2 of the uppermost bag. It is displaced between a pressing position that is pressed and engaged with and a pressing release position that is separated from the extension portion P2.

  The opening means 22 is formed in a pair of upper expansion members 60, 60 and lower expansion members 62, 62 for entering the uppermost bag portion and expanding the bag portion, and the expansion members 60, 60; 62, 62. The attached main air jet nozzles 64, 64; 66, 66 and a substantially central portion of the extension of the uppermost bag are positioned close to the extension with a gap in the width direction of the extension. The air outlet has three sub air jet nozzles 68, 68, 68 adapted to be directed to the opening of the uppermost bag.

  Each pair of upper and lower expansion members are in a reduced state suitable for being inserted into the openings expanded by the air from the main and sub air jet nozzles close to each other and on the top. A retracted position (FIG. 1) located on the side of the extended portion of the bag, and an advanced position (FIGS. 8 to 9) that is inserted into the bag portion and separated from each other to expand the bag portion. It is possible to displace between.

  The pushing means 24 has a pusher 80 that is connected to and driven by an endless chain (not shown) set at an upper position of the packaging device. That is, as shown in FIG. 1, the pusher is driven in a direction in which the sliced bread B is pushed out toward the bag P. After the sliced bread B is pushed into the bag, the pusher moves along the endless track. Then, it returns to the position shown in FIG. 1 again, and the slice bread that has been supplied at that time is pushed out.

  In the example shown in the drawing, the pushing means 24 also serves as an unloading means for unloading the uppermost bag that has received the sliced bread. That is, the pushing means 24 pushes the sliced bread into the bottom of the bag portion, and further pushes out the bread to carry out the bag.

The opening operation of this device is as follows.
(1) First, the upper expansion members 60 and 60 and the lower expansion members 62 and 62 are set to the retracted positions of the positions shown in FIG.
At this time, the upper expansion members 60, 60 are inclined inward in the front diagonal width direction and are in a state of approaching each other, and the lower expansion members are displaced inward in the width direction and are in a state of approaching each other.
Therefore, in this state, the tip end portion of the upper and lower expansion member is reduced in a beak shape, so that the shape easily enters the bag opening.
At this time, the air outlet of the main air jet nozzle is located at the tip position of the upper and lower expansion members 60, 60; 62, 62, and is directed in the substantially opening direction of the uppermost bag.

(2) Subsequently, the outer engagement members 18, 18 are raised and separated from the extension portion P2.
Further, an air jet is blown almost horizontally from the sub nozzle 20 toward the slightly open opening P4 of the bag, whereby the upper surface P5 in the bag portion P1 of the uppermost bag is directed upward from the lower surface P6. The opening of the opening P4 is separated away, and a state as shown by a two-dot chain line in FIG.
As a result, the portion of the extension P2 located outside the pins 14 and 14 is not pressed by the outer engaging portions 18 and 18, and thus rises between the pins 14 and 14 and the outer engaging portions 18 and 18. . However, at this time, the extension portion P2 does not come out of the pins 14 and 14 due to the pressing by the inner engagement portions 16 and 16.

(3) Slightly after the blowing of air by the sub air jet nozzle, the main air jet nozzles 64, 64; 66, 66 start to blow air into the enlarged opening P4, and inflate the entire bag. At the same time, the upper and lower expansion members 60, 60; 62, 62 are advanced into the bag as shown in FIG. 8 and spread through the opening (FIG. 4). Blowing by the sub-jet nozzles 68, 68, 68 is stopped before the bag is enlarged by the main air-jet nozzles 64, 64; 66, 66 and the upper and lower expansion members are advanced.
(4) In the state where the upper and lower expansion members are maintained at the advanced positions shown in FIG. 8 and the bag is expanded, the spraying by the air jet nozzle 18 is stopped, and the slice bread is opened from the opened portion by the pusher. It is inserted in (FIG. 9).

 (5) When the pusher 80 almost pushes the bread into the back of the bag (the right end side in FIG. 1), the outer engagement portion is lowered and presses the extension P2 of the bag that is second from the top. At the same time, the pins 14 and 14 are lowered.

(6) In this state, the second support member 32 supporting the extension portion P2 of the stacked bags is slightly displaced downward by the downward force applied by the outer engagement members 18, 18, and the uppermost portion The extension portion P2 of the bag is released from the pressing force from the inner engagement members 16, 16, or the pressing force is reduced. For this reason, when the pusher 80 further pushes the bread, the bag in which the bread is inserted (at the top) is pushed away from the second bag underneath. At this time, the uppermost bag containing the bread has a portion outside the pins 14 and 14 in the extension portion P2 between the outer engagement portions 18 and 18 and the pins 14 and 14 as described above. In this state, there is no press by the outer engagement portions 18, 18, and the pins 14, 14 are lowered, so that the uppermost bag is pushed out without substantial resistance.
On the other hand, since the extension portion E of the second bag from the top is pressed by the outer engagement portions 18, 18, it is not dragged by this movement of the bag containing bread and remains in its original position.
The above operation is repeated at the same time as the bag containing bread is pushed out.

  The embodiment of the present invention has been described above, but the present invention is not limited to this. For example, the pressing engagement of the extension portion by the inner engagement member is performed by opening and expanding the bag portion by the opening means. When the uppermost bag that has received the bread is taken out, the pin is lowered so that the tip of the pin is lower than the pin hole of the uppermost bag. Although it is in the lower position, it can be slightly higher than the pin hole of the second bag.

It is a perspective view which shows the outline | summary of the main component part of the packaging apparatus which concerns on this invention, and is provided with the elements on larger scale which expand and show the one part. It is a perspective view which shows the lamination | stacking state of the bag used for packaging in the packaging apparatus. In the packaging apparatus, it is a side view which shows the state of the main structural member before a packaging operation is started. It is the figure which looked at the main structural member from the left side surface, and has shown the state which the expansion member expanded into the bag. FIG. 4 is an enlarged view of a portion surrounded by a circle in FIG. 3, showing a mounting position of the sub air jet nozzle with respect to the laminated bag. It is the figure which looked at the main structural member from the upper part. FIG. 7 is a view showing a modification of the inner engagement member in the apparatus. The state which expanded the bag is shown with the side view of the main structural member. In the side view of the main structural member, the state which pushed slice bread into the expanded bag is shown.

Explanation of symbols

Bag P; Bag P1; Extension P2; Pin holes P3 and P3; Opening P4; Bag upper surface P5; Bag lower surface P6; Packaging device 10; Support means 12; Pins 14, 14; Members 16 and 16; outer engagement members 18 and 18; opening means 22; pushing means 24; unloading means 24; first support member 30; second support member 32; mounting member 34; Hole 43; Spring biasing holding means 50; Depressing means 52; Air cylinder 54; Bracket 56; Upper expansion member 60, 60; Lower expansion member 62, 62; Main air jet nozzles 64, 64; 66, 66; Jet nozzle 68, 68, 68; pusher 80

Claims (5)

A bag having a bag portion and an elongated extension portion provided along one side edge of the opening of the bag portion, the bag having two pin holes provided at intervals in the width direction of the extension portion; , Support means for supporting the laminated parts so that the bag parts overlap with each other and the extensions overlap each other in the vertical direction;
Two pins that are passed through the pin holes of the stacked extensions and whose tips protrude upward from the pin holes of the uppermost extensions;
An inner engagement member disposed between the two pin holes and adapted to engage the extension and hold the pin hole of the uppermost bag in position around the pin ;
A position that is disposed outside the two pin holes in the width direction of the extension portion , presses the extension portion, and is positioned closer to the support means than a position where the inner engagement member engages with the extension portion; a pressing position in which an outer engaging member is a displaceable between a press releasing position away from the extension portion,
When the outer engagement member is in the pressing release position, an air jet nozzle that blows air into the bag portion of the uppermost bag through its opening to inflate the bag, and the inflated bag Opening means comprising an expansion member that enters the bag portion from the opening and expands the bag portion;
Product pushing means for pushing the product through the opening into the expanded bag of the uppermost bag;
Bag unloading means for unloading the uppermost bag into which the product has been pushed from between the inner engagement member and the other bag in the state where the outer engagement member is in the pressing position;
A packaging apparatus comprising: a pin retracting unit that retracts the two pins so that the tip of the two pins is positioned below the pin hole of the uppermost bag when the bag unloading unit unloads the uppermost bag. . The support means includes a first support member that supports the stacked bag portion P1, and a second support member that supports the stacked extension portion, and the extension portion of the uppermost bag is the uppermost bag portion. The packaging device according to claim 1, wherein the stacked bag is supported at a lower position. The packaging apparatus according to claim 2, wherein the second support member is configured to be spring-biased in a direction of the inner engagement member and the outer engagement member. The inner engagement member has a portion that at least partially presses around the pin hole of the laminated extension so that air from the air jet nozzle does not lift the portion around the pin hole. Item 4. A packaging device according to any one of Items 1 to 3 . A downward force applied to the stacked extensions by the outer engagement member when the outer engagement member is in the pressed position causes the inner engagement member to extend to the uppermost bag extension. The packaging device according to claim 2, wherein the engagement pressure is reduced so that the uppermost bag can be removed with low resistance from between the inner engagement member and another bag.

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